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You searched for: subject:"coding gain"
[texts]An Application of Second Generation Wavelets for Image Denoising using Dual Tree Complex Wavelet Transform
The lifting scheme of the discrete wavelet transform(DWT) is now quite well established as an efficient techniquefor image denoising. The lifting scheme factorization ofbiorthogonal filter banks is carried out with a linear-adaptive,delay free and faster decomposition arithmetic. This adaptivefactorization is aimed to achieve a well transparent, moregeneralized, complexity free fast decomposition process inaddition to preserve the features that an ordinary waveletdecomposition process offers...
Keywords: Lifting scheme; Dual Tree Complex Wavelet transform (DT CWT); Denoising; Computational complexity; coding gain and PSNR
Downloads: 44
[movies]6.451 Principles of Digital Communication II, Spring 2005 - OCW
Instructor: Prof. David ForneyThis course is the second of a two-term sequence with 6.450. The focus is on coding techniques for approaching the Shannon limit of additive white Gaussian noise (AWGN) channels, their performance analysis, and design principles. After a review of 6.450 and the Shannon limit for AWGN channels, the course begins by discussing small signal constellations, performance analysis and coding gain, and hard-decision and soft-decision decoding...
Keywords: coding techniques; the Shannon limit of additive white Gaussian noise channels; performance analysis; Small signal constellations; performance analysis; coding gain; Hard-decision and soft-decision decoding; Introduction to binary linear block codes; Reed-Muller codes; finite fields; Reed-Solomon and BCH codes; binary linear convolutional codes; Viterbi and BCJR algorithms; Trellis representations of binary linear block codes; trellis-based ML decoding; Codes on graphs; sum-product; max-product; decoding algorithms; Turbo codes; LDPC codes and RA codes; Coding for the bandwidth-limited regime; Lattice codes; Trellis-coded modulation; Multilevel coding; Shaping
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